One Hyde Park is considered the most expensive apartment development in London (Stephen Lock for The National) Sales in One Hyde Park, London's most expensive apartment complex, have officially hit the 1-billion-pound mark, according to Savills, one of the agents for the property. The announcement is not extremely dramatic news--the company touted 900 million pounds in sales a few weeks ago--but it's still a major milestone, considering the generally depressed international market. The mark represents sales of 46 apartments to buyers from the UK, Russia, Asia and the Middle East, the company said. The total presumably includes the much-discussed 136 million-pound sale of a penthouse to Ukrainian businessman Rinat Akhmetov, reportedly a record price for a London apartment. But One Hyde Park never officially discloses details about buyers. One Hyde Park, developed in a joint venture between the Candy Brothers and a firm backed by the Qatar government, has developed into something of an icon of London's luxury market, which continues to set sales records, despite the overall market woes. For more detail on the phenomenon of central London's irrepressible housing market, .